Eight new species of Dexosarcophaga Townsend, 1917 (Diptera, Sarcophagidae) from the Neotropical Region Author Santos, Josenilson Rodrigues dos D25D8258-3D2B-4327-88B3-62893BFCA2B3 Laboratório de Diptera Neotropicais, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, 20940 - 040, Rio de Janeiro, RJ, Brazil. & Postgraduate Program in Biological Sciences (Zoology), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. josenilsonrs@yahoo.com.br Author Pape, Thomas 1371BF99-D20A-47B9-BA9D-1F8D830A1B5A Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK- 2100 Copenhagen, Denmark. tpape@snm.ku.dk Author Mello-Patiu, Cátia Antunes de AFC308BA-1CBA-4AD4-AAD3-78E1B2F2F255 Laboratório de Diptera Neotropicais, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, 20940 - 040, Rio de Janeiro, RJ, Brazil. text European Journal of Taxonomy 2022 2022-07-12 828 109 137 http://dx.doi.org/10.5852/ejt.2022.828.1857 journal article 94516 10.5852/ejt.2022.828.1857 366b5c2a-9772-48c9-88a9-5b676abe76e6 2118-9773 6823730 DF138EE3-B825-4980-8BB5-3C03C53B7428 Dexosarcophaga pallida sp. nov. urn:lsid:zoobank.org:act: 65C1F210-E75B-4A8A-A85E-F4704CB39D21 Figs 12–13 Diagnosis Vein R 1 bare. Male: scutellum without apical setae; vesica narrow at base and expanded at apex in ventral view ( Fig. 12E ); juxta strongly membranous, smooth and not differentiated from paraphallus ( Fig. 12D–E ). [Female unknown.] Etymology The species epithet ‘ pallida ’ should be treated as a noun in apposition. The name is a Latin adjective ‘ pallida ’ (= Latin), meaning ‘pale’, and alluding to the light apex of the distiphallus. Fig. 12. Dexosarcophaga pallida sp. nov. , ♂, holotype (NHRS [lost]). A . Sternite 5, ventral view. B . Syntergosternite 7+8, epandrium, cercus and surstylus, lateral view. C . Cerci, posterior view. D . Phallus and associated structures, lateral view. E . Distiphallus, ventral view. Abbreviations: see Material and methods. Scale bars =0.1 mm. Material examined Holotype COLOMBIA • ♂ ; Caquetá , Chiribiquete National Park , W Campamento ; alt. 840 m ; 26 Nov. 1992 ; G. Andrade-C leg.; NHRS [lost]. Paratype COLOMBIA • 1 ♂ ; same collection data as for holotype; NHRS [lost] . Description Male (n=2) Length: 5–6 mm . Differs from D. phoenix sp. nov. as follows: Frons about0.30 × head width at level of ocellar triangle; 7–9 well-developed frontal setae reaching level of apex of pedicel; gena and genal groove with slightly yellowish-silver pollinosity ( Fig. 13A ); acrostichals 3 (weakly differentiated) + 1; dorsocentrals 4 (anteriormost shorter) +3 (two minor anterior); intra-alars 2+ 2; meral setae 5–7; abdomen dark brown, with slightly yellowish-silver pollinosity; T4 with 1–2 pairs of lateral marginal setae; row of about 10 marginal setae on T5; marginal setae of ST2–4 slightly differentiated from discal setae; short median incision at posterior margin of ST5 ( Fig. 12A ); surstylus slightly curved ( Fig. 12B ); vesica narrow at base and expanded at apex in ventral view ( Fig. 12E ); juxta arching over acrophallus, strongly membranous, smooth and not clearly differentiated from paraphallus ( Fig. 12D–E ); median stylus narrow and with apical spines ( Fig. 12D–E ); lateral stylus equipped with strong spines apically and base curved towards ventral margin of paraphallus ( Fig. 12D–E ). Female Unknown. Distribution Colombia ( Caquetá ). Remarks Dexosarcophaga pallida sp. nov. is morphologically similar to Dexosarcophaga currani Dodge, 1968 . Males of both species have a stick-like vesica in lateral view ( Fig. 12D ; Mello-Patiu 2002 : figs 53, 56) and a membranous projection from the ventral part of the paraphallus at the level of the acrophallus ( Fig. 12D ; Mello-Patiu 2002 : figs 53, 56). The latter projection may be formed by the paraphallus or be a composite of both the paraphallus and the juxta. These two species can be differentiated by the following features: vesica strongly bifurcated at apex ( Fig. 12E ) and lateral and median styli approximately ⅓ the length of paraphallus ( Fig. 12D–E ) in Dexosarcophaga pallida sp. nov. , versus vesica slightly bifurcated at apex ( Mello-Patiu 2002 : fig. 58) and lateral and median styli approximately ½ the length of paraphallus ( Mello-Patiu 2002 : figs 53, 56–57) in Dexosarcophaga currani .